DMLOG DB_OP missing primary key field when 0

[YaroShkvorets]

Looks like Deepmind db_ops log is missing primary field key when it's zero.
Example:

Here I'm updating a row with id = 0:
DMLOG DB_OP UPD 0 myaccount:myaccount myaccount myaccount mytable <hex>

Here I'm updating a row with id = 1:
DMLOG DB_OP UPD 0 myaccount:myaccount myaccount myaccount mytable ............1 <hex>

[YaroShkvorets]

Looking closer, there is a double-space there. So I guess 0 is encoded as empty string when represented as name. Weird, but OK.